Also changed the ipns dns resolution to use the "dnslink" format

Fix iptb tests

License: MIT
Signed-off-by: Christian Couder <chriscool@tuxfamily.org>

License: MIT
Signed-off-by: Christian Couder <chriscool@tuxfamily.org>

Mention correct key size in help for init

Add timeout to ipns resolution at startup

I'm so sick of this absolute crap. It goes wrong all the time.
I want to get off godeps soon. But for now, let's **please**
setup a test on travis that exercises all sorts of godep things
to avoid merging anything that will break.

Maybe we can fail the build if any library is NOT vendored.

add clone of 3node test using iptb instead of docker

rename directory and update vendored dep

cleanup

fix log callstack for log messages

Instructions for installing command completion

implement basic peer discovery using mdns

sharness: encapsulate ipfs mount

test-lib.sh: fix umount calls

As test directories contain a space, we need to
properly quote paths, otherwise we get errors like:

```
umount: /home/christian/gocode/src/github.com/ipfs/go-ipfs/test/sharness/trash is not mounted (according to mtab)
umount: /home/christian/gocode/src/github.com/ipfs/go-ipfs/test/sharness/trash is not mounted (according to mtab)
```

instead of:

```
umount: /home/christian/gocode/src/github.com/ipfs/go-ipfs/test/sharness/trash directory.t0030-mount.sh/ipfs is not mounted (according to mtab)
umount: /home/christian/gocode/src/github.com/ipfs/go-ipfs/test/sharness/trash directory.t0030-mount.sh/ipns is not mounted (according to mtab)
```

License: MIT
Signed-off-by: Christian Couder <chriscool@tuxfamily.org>

As the ipfs mount call is now encapsulated in a
temporary function (see previous commit) its
output should not be tempered with by
test_must_fail.

License: MIT
Signed-off-by: Christian Couder <chriscool@tuxfamily.org>

As described in issue #1109 on OSX some output from
test_must_fail unfortunately goes into the "output"
file that we use to test the output from "ipfs mount".

This patch avoids the above by encapsulating the call
to "ipfs mount" into a temporary function.

License: MIT
Signed-off-by: Christian Couder <chriscool@tuxfamily.org>

This patch update fixes a few bugs:

* harden shutdown logic by @torarnv
* daemon locking fixes by @travisperson
* don't re-add entire dirs by @whyrusleeping
* tests now wait for graceful shutdown by @jbenet
* default key size is now 2048 by @jbenet

(experimenting with using semver)

init: lower default rsa key size to 2048 for now

sharness: wait for graceful shutdown

I think we should lower the default rsa key size to 2048 for now -- until we have a proper focus on securing everything. It's always a pain for new users to get hung on 4096 rsa key gen, when we have not even made sure we're using the keys perfectly correctly yet. (And 2048 is still considered secure)

sharness should only send the kill signal once, as that is
what a graceful shutdown should do. in the event that doesn't
happen, we should send it again, and then kill -9 to prevent it
lingering and messing with other tests.